Try downloading the hard drive mfgs diagnostic and test the disk....if it tests OK, then write zero's to it and afterwards ...partition and format it as desired thru the OS.
I hav a 20 GB hard disk.ihad removed it to connect it to my friend's pc. When i got it nack and connected it to my comp, i could not see the drives.
When i went into disk management, it came up with the initialization wizard.After that the disk continued to show the it was not initialised. Am not able to delete the 2 partitions in it. Not even able to format it. Please help!!